UBUNTU-CVE-2021-0920
In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References: Upstream kernel
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
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57 explicit affected versions
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182 explicit affected versions
70 explicit affected versions
31 explicit affected versions
50 explicit affected versions
23 explicit affected versions
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1 explicit affected versions
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1 explicit affected versions
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4 explicit affected versions
1 explicit affected versions
7 explicit affected versions
3 explicit affected versions
33 explicit affected versions
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4 explicit affected versions
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10 explicit affected versions
138 explicit affected versions
18 explicit affected versions
71 explicit affected versions
48 explicit affected versions
1 explicit affected versions
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1 explicit affected versions
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13 explicit affected versions
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1 explicit affected versions
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33 explicit affected versions
10 explicit affected versions
49 explicit affected versions
11 explicit affected versions
5 explicit affected versions
72 explicit affected versions
7 explicit affected versions
34 explicit affected versions
2 explicit affected versions
68 explicit affected versions
30 explicit affected versions
1 explicit affected versions
2 explicit affected versions
13 explicit affected versions
26 explicit affected versions
1 explicit affected versions
1 explicit affected versions
30 explicit affected versions
5 explicit affected versions
23 explicit affected versions
1 explicit affected versions
24 explicit affected versions
4 explicit affected versions
1 explicit affected versions
26 explicit affected versions
10 explicit affected versions
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16 explicit affected versions
3 explicit affected versions
18 explicit affected versions
38 explicit affected versions
9 explicit affected versions
115 explicit affected versions
24 explicit affected versions
50 explicit affected versions
5 explicit affected versions
80 explicit affected versions
57 explicit affected versions
4 explicit affected versions
14 explicit affected versions
48 explicit affected versions
23 explicit affected versions
43 explicit affected versions
1 explicit affected versions
93 explicit affected versions
97 explicit affected versions
26 explicit affected versions
4 explicit affected versions
13 explicit affected versions
1 explicit affected versions
4 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References: Upstream kernel
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/cbcf01128d0a92e131bd09f1688fe032480b65ca
- https://source.android.com/security/bulletin/2021-11-01
- https://ubuntu.com/security/CVE-2021-0920
- https://ubuntu.com/security/notices/USN-5361-1
- https://ubuntu.com/security/notices/USN-7720-1
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog
- https://www.cve.org/CVERecord?id=CVE-2021-0920